E10000 CTO Capacity-On-Demand/ PowerExpress system board package: 1 System Board (2761A), 4 US-II 400MHz-8Mbyte external cache Modules (2580A), 4-GB Memory (7023A), 1 Memory Board (7025A), 1 Dual SBus I/O Board (2730A), RTU CPU LICENSES MUST BE ORDERED SE